.flex {
	display: flex;
}
.flex-j-sb {
	display: flex;
	justify-content: space-between;
}
.flex-j-c {
	display: flex;
	justify-content: center;
}
.flex-j-sa {
	display: flex;
	justify-content: space-around;
}
.flex-a-c {
	display: flex;
	align-items: center;
}
.flex-j-fe {
	display: flex;
	justify-content: flex-end;
}